CA2380988C - Log testing apparatus - Google Patents
Log testing apparatus Download PDFInfo
- Publication number
- CA2380988C CA2380988C CA002380988A CA2380988A CA2380988C CA 2380988 C CA2380988 C CA 2380988C CA 002380988 A CA002380988 A CA 002380988A CA 2380988 A CA2380988 A CA 2380988A CA 2380988 C CA2380988 C CA 2380988C
- Authority
- CA
- Canada
- Prior art keywords
- log
- stem
- sensing
- processing device
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/46—Wood
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
- G01N2203/0623—Electrical or magnetic indicating, recording or sensing means using piezoelectric gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/015—Attenuation, scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0238—Wood
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02827—Elastic parameters, strength or force
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0421—Longitudinal waves
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Acoustics & Sound (AREA)
- Mathematical Physics (AREA)
- Wood Science & Technology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Molecular Biology (AREA)
- Urology & Nephrology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ33701599A NZ337015A (en) | 1999-07-30 | 1999-07-30 | Measuring density of logs by striking log end and analysing resultant echos |
| NZ337015 | 1999-07-30 | ||
| NZ33718699 | 1999-08-10 | ||
| NZ337186 | 1999-08-10 | ||
| NZ33701500 | 2000-07-21 | ||
| NZ337015/337186 | 2000-07-21 | ||
| PCT/NZ2000/000139 WO2001009603A1 (en) | 1999-07-30 | 2000-07-27 | Log testing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2380988A1 CA2380988A1 (en) | 2001-02-08 |
| CA2380988C true CA2380988C (en) | 2009-01-06 |
Family
ID=26652090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002380988A Expired - Fee Related CA2380988C (en) | 1999-07-30 | 2000-07-27 | Log testing apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6813927B1 (de) |
| EP (1) | EP1208375A4 (de) |
| AU (1) | AU779834B2 (de) |
| CA (1) | CA2380988C (de) |
| WO (1) | WO2001009603A1 (de) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU780469B2 (en) * | 1998-02-25 | 2005-03-24 | Weyerhaeuser Company | Unfinished wood product cutting optimization system |
| US6598477B2 (en) | 2001-10-31 | 2003-07-29 | Weyerhaeuser Company | Method of evaluating logs to predict warp propensity of lumber sawn from the logs |
| US7680304B2 (en) * | 2003-05-27 | 2010-03-16 | Weyerhaeuser Nr Company | Method of wood strength and stiffness prediction |
| US20050216226A1 (en) * | 2003-06-26 | 2005-09-29 | Yancey Michael J | Method for determining physical properties of wood |
| US7406190B2 (en) * | 2003-07-24 | 2008-07-29 | Lucidyne Technologies, Inc. | Wood tracking by identification of surface characteristics |
| CA2886701C (en) * | 2003-07-24 | 2017-09-26 | Lucidyne Technologies, Inc. | Wood tracking by identification of surface characteristics |
| US7066007B2 (en) * | 2003-10-17 | 2006-06-27 | Eyerhaeuser Company | Systems and methods for predicting the bending stiffness of wood products |
| NZ545247A (en) * | 2005-02-11 | 2007-05-31 | Waratah Nz Ltd | Method and apparatus for assessing or predicting the characteristics of wood |
| NL1028895C2 (nl) * | 2005-04-28 | 2006-10-31 | Brookhuis Micro Electronics B | Niet-destructief object analyse systeem. |
| EP1934566A4 (de) * | 2005-09-21 | 2011-09-21 | Messmer Instr Ltd | Verfahren und vorrichtung zur messung von eigenschaften von board-produkten |
| CA2657798C (en) * | 2006-09-20 | 2015-11-03 | Lucidyne Technologies, Inc. | Grain angle sensor |
| US20080295602A1 (en) * | 2007-06-01 | 2008-12-04 | Gavin Wallace | Method and System for Sorting Green Lumber |
| US9176025B2 (en) * | 2011-12-28 | 2015-11-03 | Electric Power Research Institute, Inc. | Apparatus and method of vibration testing for manufacturing defect detection in composite insulators |
| PT2816347E (pt) * | 2013-06-18 | 2015-12-09 | Flooring Technologies Ltd | Método de determinação, pelo menos, qualitativa de, pelo menos, uma propriedade física e/ou química de um painel laminado |
| US9383341B2 (en) * | 2013-10-29 | 2016-07-05 | Metriguard Inc. | Sonic lumber tester |
| JP6314522B2 (ja) * | 2014-02-14 | 2018-04-25 | 日本電気株式会社 | 衝撃試験ハンマ |
| CN104849350B (zh) * | 2015-05-13 | 2017-11-03 | 浙江农林大学 | 基于多特征的木材缺陷识别分类方法 |
| EP3153846A1 (de) * | 2015-10-08 | 2017-04-12 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Verfahren und system zur messung eines sensors |
| CN106052988A (zh) * | 2016-05-06 | 2016-10-26 | 四川建筑职业技术学院 | 一种辨识液体静压导轨油膜刚度、阻尼的系统及方法 |
| EP3644035B1 (de) * | 2017-06-21 | 2024-05-22 | Kabushiki Kaisha Toshiba | Strukturbeurteilungssystem und strukturbeurteilungsverfahren |
| CN108427142A (zh) * | 2018-01-30 | 2018-08-21 | 广州电力设计院有限公司 | 一种预制桩桩底溶洞探测系统及方法 |
| US11614427B2 (en) * | 2018-09-27 | 2023-03-28 | Volt Holdings Limited | Waveguide usable for non-destructive evaluation of specimen including wooden specimen |
| US11181507B2 (en) * | 2019-05-02 | 2021-11-23 | King Fahd University Of Petroleum And Minerals | Method for an acoustic resonance inspection and diagnosing of defects in solid materials and a diagnostic device |
| CA3110986A1 (en) * | 2020-03-02 | 2021-09-02 | Usnr, Llc | Acoustic evaluation of wood properties |
| CN111780854B (zh) * | 2020-06-24 | 2022-06-24 | 浙江理工大学 | 一种将超声p波平测波速转换为对测波速的测量方法 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3531983A (en) * | 1967-10-06 | 1970-10-06 | Heath Intern Inc | Sonic pole testing apparatus |
| US4399701A (en) * | 1980-06-03 | 1983-08-23 | Unisearch Limited | Method and means for detecting decay in wood |
| CA1249664A (en) * | 1986-03-11 | 1989-01-31 | Maurice W. Murphy | Apparatus and method for testing wooden poles |
| US4926691A (en) | 1986-03-11 | 1990-05-22 | Powertech Labs, Inc. | Apparatus and method for testing wooden poles |
| US5024091A (en) * | 1986-03-25 | 1991-06-18 | Washington State University Research Foundation, Inc. | Non-destructive evaluation of structural members |
| GB8622731D0 (en) * | 1986-09-20 | 1986-10-29 | Bio Kil Chemicals Ltd | Testing timbers |
| US4852029A (en) * | 1987-06-17 | 1989-07-25 | Accu-Tech Incorporated | Automated material classification apparatus and method |
| US4879752A (en) * | 1987-11-18 | 1989-11-07 | Macmillan Bloedel Limited | Lumber optimizer |
| US5097881A (en) * | 1991-04-25 | 1992-03-24 | Blount, Inc. | Ultrasonic log grading |
| JP3060053B2 (ja) * | 1992-02-26 | 2000-07-04 | 宮崎県 | 製材品の簡易等級区分方法 |
| US5307679A (en) | 1992-03-25 | 1994-05-03 | The United States Of America As Represented By The Secretary Of Agriculture | Method and apparatus for evaluating the drying properties of un-dried wood |
| DE9315506U1 (de) * | 1993-10-13 | 1993-12-02 | Fagus-Grecon Greten Gmbh & Co Kg, 31061 Alfeld | Vorrichtung zur maschinellen Festigkeitssortierung von Schnittholz |
| US5621172A (en) * | 1995-04-03 | 1997-04-15 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University | Method and apparatus for testing material strengths |
| JPH0951006A (ja) * | 1995-08-08 | 1997-02-18 | Hitachi Ltd | 半導体製造治具の取付け方法 |
| JPH09251006A (ja) * | 1996-03-15 | 1997-09-22 | Shizuoka Seiki Co Ltd | 携帯型強度判定装置 |
| SE511602C2 (sv) * | 1996-06-17 | 1999-10-25 | Dynalyse Ab | Förfarande jämte anordning för oförstörande klassificering av företrädesvis långsträckta och/eller skivformade objekt |
| JP2987498B2 (ja) * | 1997-08-12 | 1999-12-06 | 鹿児島県 | 丸太の等級区分装置 |
| US6026689A (en) * | 1998-02-25 | 2000-02-22 | Weyerhaeuser Company | Log cutting optimization system |
| NZ333434A (en) * | 1998-12-17 | 1999-10-28 | Carter Holt Harvey Ltd | Determining log length by passing ultrasonic signal through log, and using length information to determining cut positions |
| NZ331527A (en) | 1999-08-24 | 2000-03-27 | Carter Holt Harvey Ltd | Acoustic wave testing of logs for selection of wood based on fibre characteristics |
| NZ503953A (en) | 2000-04-12 | 2002-12-20 | Carter Holt Harvey Ltd | Apparatus and method for estimating timber stiffness profiles of a log by determining the density profile of a cant |
| NZ507297A (en) | 2000-10-03 | 2003-01-31 | Ralph Lindsay Boardman | Non-destructive testing of wooden members for their strength characteristics using sound or shock waves |
-
2000
- 2000-07-27 WO PCT/NZ2000/000139 patent/WO2001009603A1/en active IP Right Grant
- 2000-07-27 US US10/030,156 patent/US6813927B1/en not_active Expired - Lifetime
- 2000-07-27 CA CA002380988A patent/CA2380988C/en not_active Expired - Fee Related
- 2000-07-27 AU AU63261/00A patent/AU779834B2/en not_active Ceased
- 2000-07-27 EP EP00950113A patent/EP1208375A4/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US6813927B1 (en) | 2004-11-09 |
| WO2001009603A1 (en) | 2001-02-08 |
| AU6326100A (en) | 2001-02-19 |
| CA2380988A1 (en) | 2001-02-08 |
| EP1208375A1 (de) | 2002-05-29 |
| AU779834B2 (en) | 2005-02-10 |
| EP1208375A4 (de) | 2007-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20190729 |